Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 421 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) a balloon
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) hear far sounds (d) see in the dark
4. 4.🧺 Which of these is not needed for the periscope? (a) vinegar (b) a pencil (c) an empty juice carton (d) a ruler
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.True or false: a ruler is not needed for the periscope. (a) False (b) True
8. 8.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
9. 9.🔭 How many mirrors does a simple periscope use?
10. 10.🧺 Which of these is needed for the periscope? (a) a battery cell (b) two small mirrors (c) a magnet (d) turmeric powder
11. 11.True or false: a pencil is not needed for the periscope. (a) True (b) False
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) two small mirrors (d) yeast
13. 13.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) an empty juice carton (d) yeast
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) a battery cell (d) a ruler
15. 15.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
16. 16.🔭 Which of these reflects light well? (a) black cloth (b) a mirror (c) a dull brick (d) a rough wooden board
17. 17.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
18. 18.True or false: yeast is needed for the periscope. (a) False (b) True
19. 19.🔭 How many times does light bounce off a mirror in a simple periscope?
20. 20.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
21. 21.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a battery cell (d) an empty juice carton
22. 22.🧺 Which of these is needed for the periscope? (a) vinegar (b) a magnet (c) a pencil (d) a battery cell
23. 23.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) turmeric powder (d) sticky tape
25. 25.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) a rough wooden board (d) a shiny steel plate
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) sticky tape (d) an empty juice carton
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same mirrors (c) the same light (d) the object we look at
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) two small mirrors (c) an empty juice carton (d) a pencil
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the same carton (c) the angle of the mirrors
30. 30.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same light (c) the same mirrors (d) how clear the view is
32. 32.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) a shiny steel plate (d) a mirror
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) black cloth (d) dark soil
35. 35.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) sticky tape (d) a magnet
38. 38.True or false: vinegar is needed for the periscope. (a) True (b) False
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False

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